| Sulphur to Conyers (Georgia) | 597.59 mi (961.73 km) |
| Sulphur to Cookeville (Tennessee) | 610.39 mi (982.33 km) |
| Sulphur to Coolidge (Arizona) | 1,084.22 mi (1,744.89 km) |
| Sulphur to Coon Rapids (Minnesota) | 1,032.73 mi (1,662.02 km) |
| Sulphur to Cooper City (Florida) | 846.49 mi (1,362.29 km) |
| Sulphur to Coos Bay (Oregon) | 1,919.15 mi (3,088.57 km) |
| Sulphur to Copiague (New York) | 1,330.44 mi (2,141.14 km) |
| Sulphur to Coppell (Texas) | 285.35 mi (459.23 km) |
| Sulphur to Copperas Cove (Texas) | 277.71 mi (446.93 km) |
| Sulphur to Coral Gables (Florida) | 856.83 mi (1,378.93 km) |
| Sulphur to Coral Springs (Florida) | 842.13 mi (1,355.28 km) |
| Sulphur to Coral Terrace (Florida) | 853.72 mi (1,373.92 km) |
| Sulphur to Coralville (Iowa) | 798.56 mi (1,285.16 km) |
| Sulphur to Coram (New York) | 1,355.02 mi (2,180.69 km) |
| Sulphur to Corcoran (California) | 1,563.50 mi (2,516.22 km) |
